Sprinkler



FIG. 1 is a top plan view of a sprinkler showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right side elevational view thereof; and

FIG. 4 is a cross sectional view taken on line 4--4 of FIG. 1. 

The ornamental design for a sprinkler, as shown. 